#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int n; int a[5005]; int main(){ cin>>n; if(n%4==0&&n%100!=0||n%400==0){ cout<<"leap year"<<endl; }else{ cout<<"not leap year"<<endl; } return 0; }